:root{--bg:#f4f6fb;--card:#fff;--ink:#1f2430;--ink-soft:#6b7280;--brand:#4f6ef7;--brand-deep:#3b56d9;--brand-soft:#eef1fe;--line:#e6e9f2;--danger:#e5484d;--ok:#18a058;--radius:14px;--shadow-card:0 2px 10px rgba(31,36,48,.05);--shadow-brand:0 6px 16px rgba(79,110,247,.35)}*,:after,:before{box-sizing:border-box}body,html{margin:0;padding:0}body{min-height:100vh;font-family:PingFang SC,Microsoft YaHei,system-ui,-apple-system,sans-serif;background:linear-gradient(160deg,#eef1fb,#f7f4ee);background-attachment:fixed;color:var(--ink);-webkit-font-smoothing:antialiased}a{text-decoration:none}a,button{color:inherit}button{font:inherit}.container{max-width:1080px;margin:0 auto;padding:24px 20px 64px}.appbar{justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:24px}.appbar,.brand{display:flex;align-items:center}.brand{gap:12px}.brand-badge{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px;color:#fff;background:linear-gradient(135deg,var(--brand),#7c5cf0);box-shadow:var(--shadow-brand)}.brand-title{font-size:18px;font-weight:800;letter-spacing:.4px;line-height:1.2}.brand-sub{display:block;font-size:12px;font-weight:400;color:var(--ink-soft)}.nav{display:flex;gap:4px;padding:4px;border:1px solid var(--line);background:#fff}.nav,.nav a{border-radius:999px}.nav a{padding:7px 16px;font-size:13px;font-weight:600;color:var(--ink-soft);transition:background .15s,color .15s}.nav a:hover{background:var(--brand-soft);color:var(--brand-deep)}.nav a.router-link-exact-active{background:var(--brand);color:#fff;box-shadow:0 4px 12px #4f6ef74d}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-card)}.home-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}@media(max-width:760px){.home-grid{grid-template-columns:1fr}}.home-card h2{font-size:17px;margin:0 0 4px}.home-card p{font-size:13px;color:var(--ink-soft);margin:0 0 18px;line-height:1.6}.field{margin-bottom:14px}.field label{display:block;font-size:13px;font-weight:600;color:var(--ink-soft);margin-bottom:6px}input[type=text]{width:100%;padding:11px 14px;font-size:15px;color:var(--ink);background:#fafbfe;border:1.5px solid var(--line);border-radius:10px;outline:none;transition:border-color .15s,background .15s}input[type=text]:focus{border-color:var(--brand);background:#fff}input.room-input{letter-spacing:4px;font-size:20px;font-weight:700;text-align:center;text-transform:uppercase}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:11px 20px;font-size:15px;font-weight:600;border:none;border-radius:10px;cursor:pointer;transition:transform .1s,box-shadow .15s,background .15s}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:var(--brand);color:#fff;box-shadow:0 4px 12px #4f6ef74d}.btn-primary:hover:not(:disabled){background:var(--brand-deep)}.btn-ghost{background:transparent;color:var(--ink-soft);border:1.5px solid var(--line)}.btn-ghost:hover:not(:disabled){background:#f5f6fa;color:var(--ink)}.btn-danger{background:#fdebec;color:var(--danger)}.btn-danger:hover:not(:disabled){background:#fbd9db}.btn-block{width:100%}.btn-sm{padding:8px 14px;font-size:13px}.role-tag{font-size:12px;font-weight:600;padding:5px 12px;border-radius:999px;background:var(--brand-soft);color:var(--brand-deep)}.recent{margin-top:20px}.recent h3{font-size:14px;color:var(--ink-soft);margin:0 0 10px}.recent-item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 14px;margin-bottom:8px;background:#fff;border:1px solid var(--line);border-radius:10px;cursor:pointer;transition:background .15s}.recent-item:hover{background:var(--brand-soft)}.recent-item .code{font-weight:700;letter-spacing:2px}.recent-item .meta{font-size:12px;color:var(--ink-soft)}.recent-empty{font-size:13px}.recent-empty,.tip{color:var(--ink-soft)}.tip{margin-top:14px;font-size:12px;line-height:1.8}.room-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;margin-bottom:18px}.room-meta{display:flex;flex-direction:column;gap:8px;min-width:220px}.room-title-input{width:320px;max-width:60vw;padding:4px 2px;font-size:22px;font-weight:800;color:var(--ink);background:transparent;border:none;border-bottom:2px dashed var(--line);outline:none;border-radius:0}.room-title-input:focus{border-bottom-color:var(--brand)}.room-code-box{display:flex;align-items:center;gap:12px;padding:14px 20px;border-radius:var(--radius);color:#fff;background:linear-gradient(135deg,var(--brand),#7c5cf0);box-shadow:var(--shadow-brand)}.room-code-box .label{font-size:12px;opacity:.85}.room-code-box .code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:26px;font-weight:800;letter-spacing:6px}.room-code-box .copy{padding:6px 10px;font-size:13px;line-height:1.3;color:#fff;background:#fff3;border:none;border-radius:8px;cursor:pointer}.room-code-box .copy:hover{background:#ffffff52}.members{flex-wrap:wrap;gap:8px}.member-chip,.members{display:flex;align-items:center}.member-chip{gap:6px;padding:5px 12px;font-size:13px;background:#fff;border:1px solid var(--line);border-radius:999px}.member-chip .dot{width:8px;height:8px;border-radius:50%;background:var(--ok)}.join-banner{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:12px 16px;margin-top:14px;font-size:13px;color:var(--brand-deep);background:var(--brand-soft);border-radius:10px}.join-banner input{width:160px;padding:8px 12px;font-size:14px;background:#fff;border:1.5px solid var(--line);border-radius:8px;outline:none}.join-banner input:focus{border-color:var(--brand)}.table-wrap{overflow-x:auto;margin-top:18px;-webkit-overflow-scrolling:touch}table.timetable{width:100%;min-width:760px;border-collapse:separate;border-spacing:4px;table-layout:fixed}.timetable th{padding:8px 4px;font-size:13px;font-weight:600;color:var(--ink-soft)}.timetable th.today{color:var(--brand)}.timetable td.slot-label{width:74px;padding-right:8px;font-size:12px;color:var(--ink-soft);text-align:right;white-space:nowrap;font-variant-numeric:tabular-nums}.timetable td.slot-label.current{color:var(--brand);font-weight:700}.cell{display:flex;align-items:center;justify-content:center;width:100%;height:40px;padding:0 4px;font-size:12px;color:var(--ink);text-align:center;background:#f6f7fb;border:1.5px dashed transparent;border-radius:8px;cursor:pointer;overflow:hidden;transition:background .12s,transform .08s}.cell:hover{background:var(--brand-soft);border-color:#4f6ef766}.cell:focus-visible{outline:2px solid var(--brand);outline-offset:1px}.cell-filled{color:#fff;font-weight:600;border-style:solid;border-color:transparent;text-shadow:0 1px 2px rgba(0,0,0,.18)}.cell-filled:hover{filter:brightness(1.06)}.cell-mine{box-shadow:inset 0 0 0 2px #ffffffa6}.cell-text{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.legend{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:14px;font-size:12px;color:var(--ink-soft)}.legend .sw{display:inline-block;width:14px;height:14px;margin-right:4px;border-radius:4px;vertical-align:-2px}.room-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:18px;flex-wrap:wrap}.modal-mask{position:fixed;inset:0;z-index:50;display:flex;align-items:center;justify-content:center;padding:20px;background:#14182673}.modal{width:380px;max-width:100%;padding:26px;background:#fff;border-radius:16px;box-shadow:0 20px 50px #00000040}.modal h3{margin:0 0 4px;font-size:17px}.modal .sub{margin:0 0 16px;font-size:13px;color:var(--ink-soft)}.color-row{display:flex;gap:8px;margin:6px 0 16px}.color-opt{width:30px;height:30px;padding:0;border:3px solid transparent;border-radius:50%;cursor:pointer;transition:transform .12s}.color-opt:hover{transform:scale(1.08)}.color-opt.sel{border-color:var(--ink);transform:scale(1.12)}.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:8px}.modal-actions .spacer{flex:1}.toast{position:fixed;left:50%;bottom:36px;z-index:99;padding:10px 20px;font-size:14px;color:#fff;background:#1f2430;border-radius:10px;opacity:0;pointer-events:none;transform:translate(-50%) translateY(20px);transition:opacity .25s,transform .25s}.toast.show{opacity:1;transform:translate(-50%) translateY(0)}.empty-state{text-align:center;padding:40px 20px}.empty-state h2{margin:0 0 8px;font-size:18px}.empty-state p{margin:0 0 20px;font-size:14px;color:var(--ink-soft)}